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Convert miles per hour to kilometers per hour

Convert miles per hour (mph) to kilometers per hour (km/h). 1 mph = 1.60934 km/h, and 1 km/h = 0.621371 mph.

30 mph = 48.2803 km/h

MPH to KM/H formula

km/h = mph × 1.609344

Multiply the number of miles per hour by 1.609344.

Example: To convert 30 mph to kilometers per hour: 30 × 1.609344 = 48.2803 km/h.

Quick answers

What is 30 mph in kilometers per hour?
30 mph = 48.2803 km/h
What is 60 mph in kilometers per hour?
60 mph = 96.5606 km/h
What is 70 mph in kilometers per hour?
70 mph = 112.654 km/h
What is 100 mph in kilometers per hour?
100 mph = 160.934 km/h

MPH to KM/H conversion table

KM/H to MPH table
miles per hour (mph)kilometers per hour (km/h)
5 mph8.04672 km/h
10 mph16.0934 km/h
15 mph24.1402 km/h
20 mph32.1869 km/h
25 mph40.2336 km/h
30 mph48.2803 km/h
35 mph56.327 km/h
40 mph64.3738 km/h
45 mph72.4205 km/h
50 mph80.4672 km/h
55 mph88.5139 km/h
60 mph96.5606 km/h
65 mph104.607 km/h
70 mph112.654 km/h
75 mph120.701 km/h
80 mph128.748 km/h
90 mph144.841 km/h
100 mph160.934 km/h
120 mph193.121 km/h
150 mph241.402 km/h
200 mph321.869 km/h

Frequently asked questions

How do I convert miles per hour to kilometers per hour?

Multiply the number of miles per hour by 1.609344. To convert 30 mph to kilometers per hour: 30 × 1.609344 = 48.2803 km/h.

Is the MPH to KM/H conversion exact?

Yes. Both units are defined exactly, so 1 mile per hour is exactly 1.609344 kilometers per hour. Results on this page are rounded to six significant digits; pick more decimals in the converter if you need them.

What is 30 mph in kilometers per hour?

30 mph = 48.2803 km/h.

How do I convert kilometers per hour back to miles per hour?

Use the reverse relationship: 1 km/h = 0.621371 mph. The KM/H to MPH page has a converter and a full table.

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